Communication quad rack unit



FIG. 1 is a front elevational view of a communication quad rack unitshowing our new design;

FIG. 2 is a rear elevational view thereof;

FIGS. 3 and 4 are respectively left and right side elevational viewsthereof;

FIG. 5 is a top plan view thereof.

The ornamental design for a communication quad rack unit, as shown and described. 